Door control



April 7, 1925. 1,532,492

L. P. HYNES DOOR CONTROL Filed April 16, 1920 mum/70k m; 96 87 A TTURNEY Patented Apr. 7, 1925.

UNITEDSTATES 1,532,492 PATENT OFFICE.

LEE 1?. I-IYNES, OF ALBANY, NEW YORK, ASSIGNOR TOCONSOLIDATED CAR-HEATING COMPANY, OF ALBANY, NEW YORK, A CORPQRATION OF WEST VIRGINIA.

noon oon'raor.

Applicationfilezl April 16, 1920. Serial No, 374,321.

To all whom it may concern:

Be it known that 1, LEE P. HYNEs", a citizen of the United States, residing at Albany, in the county of Albany and State of New York, have invented certain new and useful Improvements in Door Controls, the following being a tull,-clear, and exact disclosure of the one form of my invention which I at present deem preferable.

For a detailed description of the present form of my invention, referencemay be had to the following specification and to the accompanying drawings forming a part thereof, wherein- Fig. 1 shows my device diagrammatically and Fig. 2 shows a modification.

My invention relates to the controlling means for a power-operateddoor, whereby it may be opened and closed by the doorman upon pressing the appropriate push buttons, and also be automatically reversed and opened by the door shoe in the event of obstruction and then, after being more or less fully opened, is again reversed and closed automatically, provided the obstruction is not encountered a second time.

Referring to the drawing, A designates a door designed to operate by a motor of any suitable or desired construction. For example, a pneumatic motor may be employed,

the same being controlled by a magnetic valve-shiftingdevice, the magnets of which are diagrammaticallyillustrated at C and O; the former controlling the door closing valve and the latter the door opening valve. Motors of this type are wellknown in the art, and are typically illustrated in Letters Patent 1,247,653 to Farmer and 1,287,717 to McElroy, and the invention for purposes of illustration, is assumed to be associated with such a motor, although it is not limited in this particular. In view of the well-known construction and operation of motors of this character detailed illustration thereof is considered unnecessary. Door A is also provided on its front edge with a yielding shoe or fender B such as is familiar to those skilled'in the art.

The opening and closing push buttons for the doorman are shown at O and C. In this case the buttons are each arranged to close and hold closed its respective circuit until the other button is pushed. Thus the two buttons are on opposite ends of a slide K to which are pivoted two spring-connected contact levers, which, in the position shown in the drawing, contact with and electrically connect the points 6 and ,7, having been thrown into this position by pushing in button C. When the button 0 is next pushed in the spring will act, at the dead-center point, to snap the levers away from points 6 and 7 into contact with points t and 5 which will then be electrically connected; At the same time button C will be thrown out as button 0 is forced in ready for the next operation.

IVhen the door meets an obstruction the shoe B will be forced in towards the door and close switch D so long as it remains in that relation to the door. As the door travels the electrical connection with switch D will be maintained by the parallel metallic rodsF and G upon which slide the contacts S and W attached to and moving with the door. As the door approaches its closed position," shown in the drawing, contact W moves off from rod G and contact S moves onto a short rod E. In the open position of the door, or at any desired approximation to that position, contact W runs olf rod G and contact S runs off rod F and respective ly engage two short rods Tand R. Thus it is only when the door is closed and contact S is bridging rods E and F button 0, by connecting points 4: and 5, can establish 'a circuit through opening magnet 0 from battery H, that circuit being from battery H, to contacts 4 and 5, thence through rods E and F, to magnet O and ground. At that time also the shoe B has no-control ot' the door, since even it the shoe is pressed in to close switch D, the contact l V does not touch rod G to which the battery is connected. Moreover, it is only when the door is in its open position, with contact S bridging rods T and R, that the push button C can close a circuit to the door-closing magnet C -i. e., from bat tery H to points 6 and 7, rods T, R and magnet C But in intermediate positions, with contacts S and IV on rods F and G, any movement otshoe B with respect to the door-for instance, when shoe B encounters 'an obstruction and closes switch D,a circuit will be closed from battery H, to rod G, contactWV, switch D, contact S, rod F, and door-opening magnet G to ground. Thereupon the door, which has been moving towards closed position will that the push be instantly reversed and proceed to open until cont-act Wdeaves rod Gr andcontact S bridges rods T and R. It will. be observed that the door in its closing movement breaks thccircuit to magnet C when cont-ac S moves out of engagement with-the contacts '1 and R. In control mechanism such as disclosed in the patents above identified, closing oi? the circuit through magnet U will operate the valve shifter to introduce power into ,the engine. ,lVhen the circuit to the coil is brokenlhy closing-oi the door the 'alve shifter, as is well-known in the art, is not disturbed and.the engine continnes to operate. lt however, the circuit to coil i) iscloscdby the contact l), the positionot' the valve shitteixis immediately reversed, thereby shutting oil power to the door closing side otthe engine and introducing power tothe door openingsidc, the e'ller-t or which is to instantly revorsethe door movement. This movement continues untilthe door reaches the limit of its opening: movement oratleast until the .magnetcoil ,(l is again energized. ihereupon. since points (i and ,7 have been left connccted by the previous action oi? do,or-clos inn button C, a.circuit .will be established 'lroin battery H, as heretofore described, through door-closing anagnet C and the door will be again reverse-dautomatically and make its complete closing run, unless it should onceimore encounter the obstruction, when the aforesaid action will be repeated. In this way the door will move bacltand forth,automatically so long as the obstruction is resent. Its reciprocation can be stopped at,,any time by pushing button 0 which will disconnectpoints Gand 7,-the door, itiirthe act otclosing, will ,finish its closing run, then automatically move to open position, make its opening run and stop, or, itin theact oi? opening, will finish itsopcnin run and stop. in ordinary operation the door, when standing open ,will bridge rods '2. and R. havin r been brought to that open position by pushing button which has left the door-closing circuit broken at points (i and 7. Then'by pushmg @button C the door will close, leaving the door-closing ,circuit-open behind .it at 'l and B. When it has closed, it bridges the rods 15 and F in the door-opening circuit which can then he completed by pushinn but-ton t) and .thedoor will open, leaving the door-opening circuit broken behind it at Eand F, just as inclosingit Ilettthe door-closing circuit broken at T and Thus the door, when ending its movement in one direction, automatically places the circuit in condition tor-.ffuturereverse movement v0t the door upon closing the proper switch, and when starting in one direction automatically breaks the circuit for the direction in which it has started. The push buttons also, when establishing a circuit for onezdirection, automatically break the circuit for the opposite direction and leave closed the circuit which has been es tablished.

My arrangement will. be recognized as similar in certain fundamental respects to that which appears in McElroy l'atent he .1,2S7,717, 0t 1918, but it provides, in addition, for the automatic reversal of the door from its opening to its closing direction. This it doesby means ot the connection between the-battery and rod T which is established at the points (Sand 7 by the opening push-button O and.then maintained. .h'loreover, the addition ot rod E at the opposite end provides tor an interruption otthe con nection between .16 and F after the door starts to open, thereby,preventing-the maintainingotcurrent on magnet (N for the entire periodprecedingithe next-pushingin oi button 0, whichperiod might be of an indefinite lengtl'i. By this means both the door-opening and the door-closing circuits are normally broken, one being broken at: the push-button, the other at the door contacts. The manual contacts (3 and .7 .are in series, inthedoor-closing circuit, with the contacts Tand 1R, while in the door-opening circuit themanual contacts 4 and 5 are iniinultiple with the said contacts l and .R at switch 1).

Instead ofiusine; the short strip i I may connect the point 5 permanently tothe opening magnettl) and so arrange the operatingswitch that the button-t) will open the con nectionbetween (3 and 7, as above described, but make only atmomentary closure otcontacts 4 and Thus in l ig. 2 thebuttonO is disconnected from bar .K and arranged like an. ordinary,push-button to momentarily connect points eland 5 when pressed. It. however, the button (3 is in the -position shown in filatoconncct (3 and 7 the button whenpushed in will also hititheiend ojl rod K antliopen (l and T. This gives button ().:rcontrol oiithc door at all limes, not merely whenthcdoor is closed.

What I claim as new and desire to secure by Letters Patent is:

.l. Thecombination with a door and its operating motor ot' a door opening circuititm' saidzmotor and a door closing circuit for said motor, aecontact mounted upon andmovable with thedoor, and control means for the two circuits .loeated respectively in positions to be engaged by the door carried contact at the twovextremes o'lfithe door movement.

2. The combination with a door and its operating motor of a door closing; circuit for said motor, two setsot circuit closingcontacts in said circuit, an operators switch for closing and maintaining the circuit to one set of contacts, and means carried by the door to, close the circuit through the other set 01 contacts when the door is in open position, whereby said circuit may be completed by the operator or by the door on return of the latter to its open position.

3. The combination with a door and its operating motor of a door closing circuit for said motor, two sets of contacts in series in said circuit, and means for maintaining either set closed while leaving the other set open to serve as controlling contacts for initiating closing movement of the door.

t. Electrical door control means comprising a travelling contact, a door opening circuit including control contacts positioned to be engaged by said traveling contact at one endot itslimit of travel, a manual circuit closer cooperating with the travelling contact to close said circuit, a door closing circuit includingecontrol contacts positioned to be engaged by said travelling contact at the other end of its limit of travel, and a second manual circuit closer co-operating with said travelling contact to close the last mentioned circuit.

5. Electrical door closing means comprising a travelling contact, a door opening circuit normally closed by said travelling c011- tact, a door-closing circuit, a manual switch in the last mentioned circuit capable of maintaining a normal closed position, and means co-operating with said travelling contact for automatically closing the last mentioned circuit at the end of the opening movement of the door while said manual switch is closed.

(5. Electrical door control means comprising a door opening magnet, a manual switch therefor, a door contact controlling said magnet when the circuit is closed through said manual switch, a door closing magnet in a circuit containing contacts opened by the door contact on moving toward the open door position, and a manual switch in the door-closing circuit. v

7. The combination with a door and its motor 01 a door-contact, a door-opening magnet, a door-closing magnet, a circuit for the door-opening magnet coi'npleted either by a manual switch or by the door-contact, and a circuit for the door-closing magnet completed by a manual switch or automatically by the shoe when the manual switch is closed.

8. The combination with a door and its motor, of a door-contact, door-opening and door-closing magnets, manual switches in circuits to both of said magnets, contacts actuated by the door-contact for energizing the door-opening magnet and closed by the door at the end of its opening run for energizing the door-closing magnet.

9. The combination with a door and a motor therefor of two door control circuits one for controlling the opening and the other for controlling the closing of the door, a door cont-act controlling the first mentioned circuit, and contacts for completing the door closing circuit, said contacts being positioned to be engaged by the door contact during opening movement of the door.

10. The combination with a 'door and a motor therefor of door-opening and door closing magnets for said motor, a doorshoe and contacts operated thereby, travel ling contacts on the door and a series of stationary contact bars, engaged by said travelling contacts, two of said bars being bridged by said contacts and included in the circuit of the door-opening magnet, a third bar being connected to the source of current supply and the fourth and fifth bars being in the circuit of the door-closing magnet and bridged by said travelling contacts.

11. The combination with a door and a motor therefor, of door-opening and doorclosing magnets therefor, a door-shoe and contacts operated thereby, travelling contacts operated by the door and stationary contact-bars, bridged in pairs by a travelling contact, one pair in the circuit of the doorclosing magnet and one in the circuit of the door-opening magnet.

12. The combination with a door and its operating motor of. a circuit controlling the door-opening movement, a travelling contact controlling said circuit, a switch for disabling said travelling contact when the door is closed,'a spring for operating said switch, and means for releasing said spring when the door is closed whereby the closing of the door precedes the closing of the switch.

Signed at New York, county of New York, State of New York, this 13th day of April, 1920.

LEE P. HYNES.

contacts 

